Skip to main content
Ryerson Campus Psych @ Ryerson

Department of Psychology

Increase Text Size
Decrease Text Size
 Change Text Size 
David Day

David M. Day, C.Psych.




PhD, University of Windsor




416-979-5000 x7104

Email Address:


Curriculum Vitae

Keywords: children’s mental health; delinquency; criminal careers; physical restraints

In 1982 I entered the graduate program in applied social psychology (community psychology stream) at the University of Windsor with a particular interest in community mental health and psychosocial rehabilitation.  My doctoral work focused on the study of a personality variable, psycho-epistemology, as a predictor of attitude change. 

In 1989, I became Director of Research and Evaluation at Earlscourt Child and Family Centre (now the Child Development Institute) in Toronto.  Earlscourt specialized in the treatment of children, ages 6 to 11 years, with conduct problem behaviours.  My research was on the factors that contribute to an early onset of antisocial behaviour, including those behaviours that would be criminally chargeable if the child was over age 12 years.  This led to an interest in developmental criminology and work as a staff psychologist at a medium security prison for adult male offenders, prior to becoming a faculty member at Ryerson University in 1998.

At Ryerson, I have continued to pursue my dual interests in children’s mental health and developmental criminology.  One of my major research projects is a longitudinal investigation of developmental risk factors and criminal trajectories in a sample of 764 male offenders. A second project is a study of the psychological impact of physical restraints on children in residential and day treatment programs, funded by a grant from Ryerson University.  A third study examines predictors of sexual risk and injury risk behaviours in juvenile offenders. I enjoy research at the community-level and am fortunate to be able to continue this work with various agencies and organizations.

My teaching activities at Ryerson have paralleled my research interests and have included Social Psychology, Developmental Psychopathology, Community Psychology, and Introductory Psychology. Some of my publications are listed below.  



Selected Publications:

Day, D. M., Wilson, H., Bodwin, K.*, & Monson, C. M. (2015). Change in Level of Service Inventory – Ontario Revised (LSI-OR) risk scores over time: An examination of overall growth curves and subscale-dependent growth curves. International Journal of Offender Therapy and Comparative Criminology, 1-17. Available online.

Newman, J. E., Wanklyn, S. G., Ward, A. K., Cormier, N. S., & Day, D. M. (2015). Developmental predictors distinguish sexual offending, violent offending, and versatile violent offending in adulthood, Journal of Sexual Aggression21, 290-302.

Nielsen, J. D., Rosenthal, J., S., Sun, Y., Day, D. M., Bevc, I., & Duchesne, T. (2014). Group-based criminal trajectory analysis using cross-validation criteria. Communications in Statistics: Theory and Methods43, 4337-4356.

Day, D. M., Wanklyn, S. G., Yessine, A. K. (2014). A review of terminological, conceptual, and methodological issues in the developmental risk factor literature for antisocial and delinquent behavior. Child and Youth Care Forum43, 97-112.

Stephens, S. & Day, D. M. (2013). Distinguishing among weapons offenders, drug offenders, and weapons and drug offenders based on childhood predictors and adolescent correlates.Criminal Behaviour and Mental Health23, 177-190.

Day, D. M., Hart, T. A., Wanklyn, S. G., McCay, E., Macpherson A., & Burnier, N. (2013). Potential mediators between child abuse and both violence and victimization in juvenile offenders. Psychological Services10, 1-11.

Wanklyn, S.G., Day, D. M., Hart, T. A., & Girard, T. (2012). Cumulative childhood maltreatment and depression among incarcerated youth: Impulsivity and hopelessness as potential intervening variables. Child Maltreatment17, 306-317.


Professional Affiliations:

  • Ontario Psychological Association (OPA)
  • Canadian Psychological Association (CPA)
  • American Psychological Association (APA)


Hot! Psych Feature:

How are crime and development linked in offenders?

Faculty Information

Mailing Address:

Department of Psychology
Ryerson University
350 Victoria Street
Toronto, Ontario
M5B 2K3, Canada

Fax: 416-979-5273


Campus Location

Offices: 380 Victoria St. [map]
Research Labs: 105 Bond St. [map]


Faculty Positions